619,500 CHF
Breguet (No. 125/3243), Pendule branlante, with quantiemes a rebours, entered in the registers on 7 November 1791, sold to Mr. Veaujour in February 1792 against a watch of 240 Francs. Fine and extremely rare, one month going, second beating double face mystery swinging calendar clock with centre seconds. Mounted on a mahogany panel, at the bottom third of which is a mirror. It is suspended from a brass potence screwed into this panel. The clock is fitted in its own pendulum bob. Front white enamel with Arabic numerals and outer seconds and minute ring. Blued steel "arrow hands". White enamel on the back, by Dubuisson No. 3774 (signed on the the enamel backing) with calendar ring painted in mirror image on the rear face. Brass circular with four going barrels, pin wheel escapement controlled by a pivoted weight. Each swing of the clock causes the weight to fall from side to side and to release a tooth of the escape wheel at each movement.At the same time, the movement of the weight, by putting the clock out of poise, speeds the return swing to compensate for the natural dissipation and so maintain the action. The small internal pendulum therefore sets up the sympathetic vibration which the main pendulum absorbs. Once the main pendulum has reached its arc of full amplitude, it begins to exert its regulating influence over the small internal pendulum. These two independent vibrations are gradually brought into step and in the end, the larger pendulum, although relying on t Read more…
Auctioneer:
Antiquorum
Date:
1997-10-18
